CondominiumResidential
9405 Blackwell Rd
ROCKVILLE, MD 20850
1,329 ft²
Lot SizeThe size of the land the home sits on, from county records.
2004
Year BuiltThe year the home was originally built, according to county records.
Built 20044 floors49 units858–3,119 ft²
$29M
All units combinedThe sum of our current value estimates for every unit in the building — roughly what the whole building's homes are worth together.
$593K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$322
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.
-3.2%vs the Rockville ZIP median sale $/ft² ($333)
Sales Performance
$596K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
-8.3%
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
3
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
6.1%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+1.0%per yeartypical hold 7.6 yrsfrom 27 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
20042007201120142016201920222026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
20042007201120142016201920222026
65 arms-length sales on record for this building.
Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
Every unit: size vs estimated valueEvery unit in the building as one dot: across is its size, up is our current value estimate, and color is its bedroom count. Vertical columns of dots are recurring floor plans; the height spread within a column shows how much floor, view and condition move prices for the same layout.
Studio
Studio
49 units$593K · $322/ft²
Recurring floor plansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
Studio · 0 ba · 1,704 ft²
6 units$595K · $349/ft²
Studio · 0 ba · 2,049 ft²
6 units$609K · $297/ft²
Studio · 0 ba · 1,663 ft²
3 units$537K · $323/ft²
Studio · 0 ba · 1,664 ft²
3 units$538K · $323/ft²
Studio · 0 ba · 2,052 ft²
3 units$604K · $295/ft²
Studio · 0 ba · 2,059 ft²
3 units$607K · $295/ft²
Studio · 0 ba · 3,073 ft²
3 units$894K · $291/ft²
Studio · 0 ba · 910 ft²
2 units$204K · $224/ft²
Studio · 0 ba · 1,395 ft²
2 units$473K · $339/ft²
Studio · 0 ba · 1,400 ft²
2 units$482K · $345/ft²
Studio · 0 ba · 1,752 ft²
2 units$589K · $336/ft²
Studio · 0 ba · 1,755 ft²
2 units$586K · $334/ft²
Studio · 0 ba · 2,689 ft²
2 units$808K · $300/ft²
One-off layouts
10 units
Value DistributionHow the building's units spread across value ranges by our current estimates. A wide spread usually means big differences in size, floor or view.
$197K–$210K
5 units
$460K–$522K
5 units
$525K–$617K
29 units
$667K–$669K
2 units
$808K–$808K
2 units
$864K–$938K
5 units
$1.1M–$1.1M
1 unit
Value by Floor & LineAverage estimated price per square foot by floor range, using unit numbers to infer floors. Higher floors usually price higher — the gap shows how much the view is worth here.
Floor 1
$274/ft²9 units · -15%
Floor 2
$319/ft²14 units · -1%
Floor 3
$323/ft²14 units · +0%
Floor 4
$316/ft²12 units · -2%
Unit lines by $/ft²Condo units stacked vertically share a unit line — the last digits of the unit number (like 05 in 1205, 1305, 1405). Lines share a layout and exposure, so comparing estimated $/ft² by line shows which position in the building commands a premium.
Line ·07
$344/ft²4 units · +7%
Line ·11
$331/ft²3 units · +3%
Line ·02
$329/ft²4 units · +2%
Line ·03
$324/ft²4 units · +1%
Line ·10
$323/ft²3 units · +0%
Line ·05
$321/ft²4 units · +0%
Line ·12
$306/ft²3 units · -5%
Line ·09
$306/ft²4 units · -5%
Line ·08
$304/ft²4 units · -6%
Line ·06
$297/ft²4 units · -8%
Line ·04
$284/ft²4 units · -12%
Line ·01
$279/ft²4 units · -13%
Ownership & Financing
Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.49%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.41%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.10.5 yrs
Cash purchases (5 yrs)The share of purchases in the last 5 years with no mortgage recorded. High cash share is common in second-home and investor buildings.43%
Avg. loan-to-valueAverage current loan balance against unit value across the building. Low numbers mean owners hold lots of equity — a sign of financial stability.29%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$599,151
Median tax billThe middle annual property tax bill among the building's units.$6,008
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.0
Recent SalesThe latest recorded arms-length sales in the building, newest first.
Unit 307Jun 29, 2026$462,000$331/ft²Unit 214Jun 8, 2026$596,000$358/ft²Unit 305Jan 7, 2026$630,000$370/ft²Unit 310Dec 4, 2024$650,000$371/ft²Unit 308Jul 31, 2024$910,000$338/ft²Unit 313Jun 24, 2024$737,500$358/ft²Unit 202May 24, 2024$560,000$337/ft²Unit 102Dec 27, 2023$554,000$335/ft²Unit 308Nov 7, 2023$876,000$326/ft²Unit 409Oct 11, 2023$569,000$334/ft²
Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.
Climate Risk
Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.38
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
6
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
75
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
78
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
34
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Scores 0–100; higher = greater projected risk.
Property Facts
Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyMONTGOMERY
Lot (acres)The size of the land the home sits on, from county records.0.03
PoolWhether the property has a pool, and what kind, such as in-ground.No
Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.
MEH
Julius West Middle SchoolA
Middle · Grades 6–8 · 2.1 mi
Ritchie Park Elementary SchoolA-
Elementary · Grades KG–5 · 2.7 mi
Richard Montgomery High SchoolA-
High · Grades 9–12 · 2.7 mi
District: Montgomery County Public Schools
Neighborhood · ZIP 20850These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.
CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.104
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.40
Index scale: 100 = US average (tick). Lower is better.
Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.51,693
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,703 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$126,425
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$154,183
Average tempThe average temperature here across a full year.54°F
Annual precipHow much rain and melted snow falls here in a typical year.43 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%
All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.
9405 Blackwell Rd # 101
1,061 ft²
9405 Blackwell Rd # 102
1,653 ft²
9405 Blackwell Rd # 103
1,397 ft²
9405 Blackwell Rd # 104
910 ft²
9405 Blackwell Rd # 105
858 ft²
9405 Blackwell Rd # 106
910 ft²
9405 Blackwell Rd # 107
1,396 ft²
9405 Blackwell Rd # 108
1,642 ft²
9405 Blackwell Rd # 109
1,053 ft²
9405 Blackwell Rd # 201
3,073 ft²
9405 Blackwell Rd # 202
1,663 ft²
9405 Blackwell Rd # 203
2,049 ft²
9405 Blackwell Rd # 204
2,052 ft²
9405 Blackwell Rd # 205
1,704 ft²
9405 Blackwell Rd # 206
1,755 ft²
9405 Blackwell Rd # 207
1,395 ft²
9405 Blackwell Rd # 208
2,689 ft²
9405 Blackwell Rd # 209
1,400 ft²
9405 Blackwell Rd # 210
1,752 ft²
9405 Blackwell Rd # 211
1,704 ft²
9405 Blackwell Rd # 212
2,049 ft²
9405 Blackwell Rd # 213
2,059 ft²
9405 Blackwell Rd # 214
1,664 ft²
9405 Blackwell Rd # 301
3,073 ft²
9405 Blackwell Rd # 302
1,663 ft²
9405 Blackwell Rd # 303
2,049 ft²
9405 Blackwell Rd # 304
2,052 ft²
9405 Blackwell Rd # 305
1,704 ft²
9405 Blackwell Rd # 306
1,755 ft²
9405 Blackwell Rd # 307
1,395 ft²
9405 Blackwell Rd # 308
2,689 ft²
9405 Blackwell Rd # 309
1,400 ft²
9405 Blackwell Rd # 310
1,752 ft²
9405 Blackwell Rd # 311
1,704 ft²
9405 Blackwell Rd # 312
2,049 ft²
9405 Blackwell Rd # 313
2,059 ft²
9405 Blackwell Rd # 314
1,664 ft²
9405 Blackwell Rd # 401
3,073 ft²
9405 Blackwell Rd # 402
1,663 ft²
9405 Blackwell Rd # 403
2,049 ft²
9405 Blackwell Rd # 404
2,052 ft²
9405 Blackwell Rd
1,704 ft²
9405 Blackwell Rd # 406
3,107 ft²
9405 Blackwell Rd # 407
2,705 ft²
9405 Blackwell Rd # 408
3,119 ft²
9405 Blackwell Rd # 409
1,704 ft²
9405 Blackwell Rd # 410
2,049 ft²
9405 Blackwell Rd # 411
2,059 ft²
9405 Blackwell Rd # 412
1,664 ft²
Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.
About 9405 Blackwell Rd
How many units are in 9405 Blackwell Rd, Rockville, MD?
9405 Blackwell Rd, Rockville, MD has 49 residential units across 4 floors, built in 2004, according to county assessor records.
What is a unit at 9405 Blackwell Rd, Rockville, MD worth?
The median TopHap Estimate across the 49 units at 9405 Blackwell Rd, Rockville, MD is $593,262. That works out to $322 per square foot. Units run from 858 to 3,119 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.
Is 9405 Blackwell Rd, Rockville, MD expensive for Rockville?
Units at 9405 Blackwell Rd, Rockville, MD carry a median of $322 per square foot, 3% below the Rockville median of $333 per square foot.
How often do units sell at 9405 Blackwell Rd, Rockville, MD?
3 units at 9405 Blackwell Rd, Rockville, MD sold in the last 12 months, out of 65 recorded arms-length sales all time. That is a turnover rate of 6.1% of the building per year. The median sale over that period was $596K.
Have units at 9405 Blackwell Rd, Rockville, MD appreciated?
Across 27 repeat sales of the same unit, 9405 Blackwell Rd, Rockville, MD returned a median 1.0% per year. Because each pair is the same unit bought and sold, the figure is not distorted by which units traded. The median owner held for 7.6 years.
What floor plans does 9405 Blackwell Rd, Rockville, MD have?
The most common plan at 9405 Blackwell Rd, Rockville, MD is a 0-bedroom of 1,704 square feet, repeated 6 times, with a median estimate of $595,455. TopHap identifies 13 recurring plans in the building.
Closest homes
- 9405 Blackwell Rd$590K0 ft · 1,755 ft² · Sold $417K · Nov 2004
- 9405 Blackwell Rd$603K0 ft · 2,049 ft² · Sold Jan 1900
- 9405 Blackwell Rd$938K0 ft · 3,107 ft² · Sold $713K · Oct 2004
- 9405 Blackwell Rd$603K0 ft · 2,049 ft² · Sold $433K · Nov 2004
- 9405 Blackwell Rd$525K0 ft · 1,396 ft² · Sold $286K · Feb 2016
- 9405 Blackwell Rd$596K0 ft · 1,704 ft² · Sold $475K · Oct 2017
- 9405 Blackwell Rd$207K0 ft · 1,053 ft² · Sold $161K · Jan 2015
- 9405 Blackwell Rd$528K0 ft · 1,642 ft² · Sold $460K · Feb 2021
More homes in Rockville 20850
- 16 Fairwood Ct$1.1M2.5 ba · 4,062 ft² · Sold $1.1M · Aug 2026
- 215 Lincoln Ave$879K8 ba · 4,125 ft² · Sold $800K · Jul 2026
- 3070 Nina Clarke Dr1,152 ft² · Sold $866K · Jul 2026
- 501 Hungerford Dr$277K1 ba · 877 ft² · Sold $245K · Jul 2026
- 118 Monroe St$115K1 ba · 476 ft² · Sold $116K · Jul 2026
- 216 N Van Buren St$691K2 ba · 2,022 ft² · Sold $850K · Jul 2026
- 12628 Saint James Rd$1M2.5 ba · 2,940 ft² · Sold $1M · Jul 2026
- 4038 Odessa Shannon Way1,958 ft² · Sold $1M · Jul 2026
- 327 King Farm Blvd$578K1,725 ft² · Sold $530K · Jul 2026
- 628 Grand Champion Dr$740K3 ba · 1,962 ft² · Sold $745K · Jul 2026
- 5 Ingleside Ct$555K2 ba · 1,188 ft² · Sold $549K · Jul 2026
- 565 Shorthorn Way$650K3.5 ba · 1,952 ft² · Sold $650K · Jul 2026
Assigned schools
Explore the area
See this home in context
Open 9405 Blackwell Rd on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.
Open in map